Thermosetting resinous binder compositions, their preparation and use as coating materials

An aqueous paint composition suitable for cathodic electrodeposition comprising a binder comprising (1) a non-acidic resinous compound having the formula:

• A--B--C--B).sub.m A
• wherein m is a number from 0 to 2, A is a group which is linked to B through a tertiary amino function and being derived from an amine having one secondary amino group, B is a group ##STR7## wherein n is a number from 0 to 4, R is a hydrocarbon radical of a dihydric phenol, and C is a group which is linked to B through two tertiary amino functions and being derived from an amine containing at least two secondary amino groups or a primary mono-amino groups, (2) a non-acidic polyester prepared by reacting a polycarboxylic acid or anhydride thereof with at least one hydroxyl-containing compound selected from the groups consisting of glycols, glycol mono-ethers and polyols, and (3) a polyvalent metal compound, said binder having from about 20% to about 100% of the amino groups neutralized with a carboxylic acid.